A WEDGE-SHAPED agar gel is formed by pouring out 10 ml. of a hot 2 per cent agar solution (‘Bacto-Agar’, Difco Laboratories) on a pre-warmed glass plate (16 cm. × 4 cm.), which is slightly ...
But when Protacio and her team tested different lots of agar, they noticed that cells grew as expected on some lots but didn’t grow effectively on others. The culprit was surprising, as agar isn ...